Bearing Bush For A Shaft Of A Turbo Charger

Abstract: The application for patent concerns a bearing bush 6 for a shaft 4 of a turbo charger 1. Furthermore a turbo charger with such a bearing bush. The application is based on prior art which shows the typically complex channels in the housing of the turbo charger to distribute oil to the bearing bush and especially to the radial bearing surfaces. According to the invention the outer surface of the bearing bush comprises a groove to distribute the oil. Therefore, in the housing of the turbo charger only one preferably central channel for the supply of oil is needed. The groove on the outer surface of the bearing bush is running for example in axial direction as a longitudinal groove. Otherwise the groove can run with a directional component in axial direction. This includes a diagonal groove running e.g. from the upper left to the lower right or else. Furthermore v- or w-shaped grooves and/or a spiral groove is included under the scope of the independent claim. One further idea which is claimed here in a dependent sub-claim is the fact that the bearing bush 6 is fixed in the housing 5 with a pin 13. The pin 13 is engaged with the bearing bush 6 with axial and radial clearance. Furthermore, the pin 13 comprises a through-bore 24 in its longitude direction to allow the supplier drainage of oil as a lubricant. Furthermore aspects of the invention claimed can be seen from the further depending sub-claims as attached in form of a word by word translation of the German claims. Further aspects of the preferred examples can be seen from the attached figures. (Figure to be published along with abstract: Figure 1)

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